新型炭材料（中英文）2026，Vol.41Issue(4)：945-960,16.DOI:10.1016/S1872-5805(26)61102-X
优化多孔碳基体抑制表面硅生成以提升循环稳定性
Improving the porous carbon matrix to suppress the formation of surface silicon for improved cycling stability
摘要
Abstract
Silicon-carbon composites prepared by chemical vapor deposition(CVD)are highly promising anode materials for high-energy-dens-ity lithium-ion batteries.However,the influence of the pore structure of the porous carbon(PC)carri-er on the silicon deposition behavior,as well as the influence of surface silicon on its outer sur-face on cycling stability,remain unclear,which severely hinders the development and practical ap-plication of these anodes.Nitrogen adsorption-de-sorption analysis,X-ray photoelectron spectroscopy,and thermogravimetric analysis were used to investigate the effect of the pore structure of the porous carbon on the silicon deposition,especially the formation of surface silicon.Research shows that too much surface silicon hinders lithium-ion diffusion kinetics and decreases the stability of the solid electrolyte interphase lay-er,thereby leading to decreased cycling stability of the anode.Porous carbon with an increased mesopore content allows silic-on to deposit deeper into the pores,thereby reducing the formation of surface silicon and extending the cycle life.Electrochem-ical results show that the optimized silicon-carbon composite maintains a high specific capacity of 693.1 mAh/g after 150 cycles at 0.5 C(900 mA/g).This work provides new insights into the development and failure mechanisms of CVD-derived sil-icon-carbon composite anodes.关键词
化学气相沉积/硅沉积行为/硅炭负极/浮硅/锂离子电池Key words
Chemical vapor deposition/Silicon deposition behavior/Silicon-carbon anode/Floating silicon/Lithium-ion battery分类
化学化工引用本文复制引用
杨飞,黄强,易宗琳,叶林,谢莉婧,陈景鹏,苏方远..优化多孔碳基体抑制表面硅生成以提升循环稳定性[J].新型炭材料（中英文）,2026,41(4):945-960,16.基金项目
This work was supported by the autonomous re-search project of SKLCM(SCJC-XCL-202501). SKLCM自主研究项目(SCJC-XCL-202501). （SCJC-XCL-202501）
